Statement Of Changes In Equity [Abstract]

Telenet Group Holding NV - Filing #3210086

Concept	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2022-01-01 to 2022-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31	2021-01-01 to 2021-12-31
Statement of changes in equity [abstract]
Statement of changes in equity [line items]
Increase (decrease) through transactions with owners, equity	58,200,000 EUR	164,000,000 EUR	6,900,000 EUR	146,100,000 EUR	157,900,000 EUR	17,900,000 EUR	71,200,000 EUR	24,800,000 EUR	14,100,000 EUR	2,700,000 EUR	— EUR	280,800,000 EUR	305,600,000 EUR	292,200,000 EUR
Purchase of treasury shares	21,900,000 EUR	21,900,000 EUR	—	21,900,000 EUR	—	—	—	—	—	13,500,000 EUR	—	13,500,000 EUR	13,500,000 EUR	—
Cancellation of treasury shares	71,200,000 EUR	— EUR	—	— EUR	—	—	71,200,000 EUR	—	—	—	—	—	—	—